com.io7m.changelog.core.QVersionQualifiers Maven / Gradle / Ivy
/*
* Copyright © 2024 Mark Raynsford https://www.io7m.com
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package com.io7m.changelog.core;
import java.util.Comparator;
import java.util.Objects;
import java.util.Optional;
/**
* Functions over version qualifiers.
*/
final class QVersionQualifiers
{
private QVersionQualifiers()
{
}
static final Comparator> COMPARE_QUALIFIER =
(x, y) -> {
if (Objects.equals(x, y)) {
return 0;
}
if (x.isEmpty()) {
return 1;
}
if (y.isEmpty()) {
return -1;
}
final var xx = x.get();
final var yy = y.get();
return xx.compareTo(yy);
};
}